Home / 99,432,320.88-137,220,880.65-55,379,339.31

Finding the Fourth Proportional to 99,432,320.88, 137,220,880.65 and 55,379,339.31

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Solution

The fourth proportional to 99,432,320.88, 137,220,880.65 and 55,379,339.31 is: 76,425,870.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,432,320.88 : 137,220,880.65 = 55,379,339.31 : x
  2. Step 2: Convert to fraction form
    99,432,320.88/137,220,880.65 = 55,379,339.31/x
  3. Step 3: Cross multiply
    99,432,320.88x = 137,220,880.65 × 55,379,339.31
  4. Step 4: Simplify right side
    99,432,320.88x = 7,599,201,710,240,269
  5. Step 5: Solve for x
    x = 7,599,201,710,240,269/99,432,320.88
  6. Step 6: Final answer
    x = 76,425,870.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.